Acquisition and Processing of Point Receiver Measurements in Land Seismic Surveying

For many years, large groups of geophones have been hardwired together to form arrays designed to attenuate unwanted ground roll (Rayleigh waves) and pass the desired reflection and refraction signal during seismic surveys. Advances in telemetry have enabled many more data channels to be recorded simultaneously and we are now able to record the output from every sensor in the active survey spread. The availability of point receiver data has enabled the application of much more effective, data adaptive noise attenuation techniques, while retaining much more of the signal than is afforded by hardwired arrays. The issues of spatial aliasing and appropriate spatial sampling will be illustrated in the presentation. Examples of the benefits of point receiver recording with real data will be shown.